/*
 * Copyright (c) 2009-2010, okazoh_tk. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  - Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  - Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *  - Neither the name of the copyright holder nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include "alkes/media/LockImageBuffer.h"

namespace alkes {

LockImageBuffer::LockImageBuffer(ImageBuffer* image, uint32_t lock_mode, const Rect* rect)
: image_(image)
{
    buffer_ = image->lockRect(rect, lock_mode, &pitch_);
}

LockImageBuffer::~LockImageBuffer()
{
    if (buffer_)
    {
        image_->unlockRect();
    }
}

void LockImageBuffer::detach()
{
    if (buffer_)
    {
        image_->unlockRect();
        buffer_ = 0;
    }
}

int32_t LockImageBuffer::getPitch() const
{
    return pitch_;
}

PixelFormat LockImageBuffer::getPixelFormat() const
{
    return image_->getPixelFormat();
}

void LockImageBuffer::getImageSize(uint16_t& width, uint16_t& height) const
{
    image_->getImageSize(width, height);
}

uint16_t LockImageBuffer::getImageWidth() const
{
    uint16_t width, height;
    getImageSize(width, height);
    return width;
}

uint16_t LockImageBuffer::getImageHeight() const
{
    uint16_t width, height;
    getImageSize(width, height);
    return height;
}

void* LockImageBuffer::getBuffer() const
{
    return buffer_;
}

LockImageBufferRead::LockImageBufferRead(ImageBuffer* image, const Rect* rect)
: LockImageBuffer(image, AL_LOCKMODE_READ, rect)
{
}

LockImageBufferRead::operator const uint8_t* () const
{
    return static_cast<const uint8_t*>(getBuffer());
}

LockImageBufferWritable::LockImageBufferWritable(ImageBuffer* image, bool readable, const Rect* rect)
: LockImageBuffer(image, AL_LOCKMODE_WRITE|(readable?AL_LOCKMODE_READ:0), rect)
{
}

LockImageBufferWritable::operator uint8_t* () const
{
    return static_cast<uint8_t*>(getBuffer());
}

LockImageBufferWrite::LockImageBufferWrite(ImageBuffer* image, const Rect* rect)
: LockImageBufferWritable(image, false, rect)
{
}

LockImageBufferReadWrite::LockImageBufferReadWrite(ImageBuffer* image, const Rect* rect)
: LockImageBufferWritable(image, true, rect)
{
}

}
